DOI: 10.1038/ngeo2953
论文题名: Holocene warming in western continental Eurasia driven by glacial retreat and greenhouse forcing
作者: Baker J.L. ; Lachniet M.S. ; Chervyatsova O. ; Asmerom Y. ; Polyak V.J.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2017
卷: 10, 期: 6 起始页码: 430
结束页码: 435
语种: 英语
Scopus关键词: afforestation
; continental interior
; greenhouse gas
; Holocene
; insolation
; meltwater
; Northern Hemisphere
; paleotemperature
; stabilization
; Atlantic Ocean
; Atlantic Ocean (North)
; Urals
英文摘要: The global temperature evolution during the Holocene is poorly known. Whereas proxy data suggest that warm conditions prevailed in the Early to mid-Holocene with subsequent cooling, model reconstructions show long-term warming associated with ice-sheet retreat and rising greenhouse gas concentrations. One reason for this contradiction could be the under-representation of indicators for winter climate in current global proxy reconstructions. Here we present records of carbon and oxygen isotopes from two U-Th-dated stalagmites from Kinderlinskaya Cave in the southern Ural Mountains that document warming during the winter season from 11,700 years ago to the present. Our data are in line with the global Holocene temperature evolution reconstructed from transient model simulations. We interpret Eurasian winter warming during the Holocene as a response to the retreat of Northern Hemisphere ice sheets until about 7,000 years ago, and to rising atmospheric greenhouse gas concentrations and winter insolation thereafter. We attribute negative δ 18O anomalies 11,000 and 8,200 years ago to enhanced meltwater forcing of North Atlantic Ocean circulation, and a rapid decline of δ 13C during the Early Holocene with stabilization after about 10,000 years ago to afforestation at our study site. We conclude that winter climate dynamics dominated Holocene temperature evolution in the continental interior of Eurasia, in contrast to regions more proximal to the ocean. © 2017 Macmillan Publishers Limited, part of Springer Nature. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105778
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: University of Nevada, Las Vegas, Las Vegas, NV, United States; Shulgan-Tash State Nature Reserve, Gadelgareevo, Russian Federation; University of New Mexico, Albuquerque, NM, United States
Recommended Citation:
Baker J.L.,Lachniet M.S.,Chervyatsova O.,et al. Holocene warming in western continental Eurasia driven by glacial retreat and greenhouse forcing[J]. Nature Geoscience,2017-01-01,10(6)